HORIZON UNDERGROUND LLC
California contractor license #1149574 · Norco, Riverside County
License
- License number
- 1149574
- Status
- Clear
- Classifications
- A General Engineering Contractor
- C-61/D-09 Drilling, Blasting and Oil Field Work
- Business type
- Limited Liability
- Issued
- Jan 27, 2026
- Expires
- Jan 31, 2028
- Workers' compensation
- Workers' Compensation Insurance — American Casualty Company Of Reading Pa
- Contractor's bond
- $25,000 — Merchants Bonding Company (Mutual)
- DIR public works registration
- Registered through Jun 30, 2028
From the California Contractors State License Board (CSLB) public license file, last updated Jun 16, 2026. Verify license #1149574 on CSLB's License Check.
California public works
HORIZON UNDERGROUND LLC appears on 55 public works projects registered with the California Department of Industrial Relations, 1 of them as the prime contractor, for 44 awarding bodies between 2020 and 2026. Projects it led total $100,000 in reported contract value.
| Date | Project | Awarding body | Role | Contract amount |
|---|---|---|---|---|
| Apr 1, 2026 | Potholes for Headworks Overflow LineOther | City of Riverside - Public Works Engineering | Subcontractor | $19,300 |
| Feb 24, 2026 | L1U8-ENERGY PROJECT SOLARDesign, inspection & consulting | Mt. San Antonio College | Subcontractor | $49,701,776 |
| Dec 11, 2025 | LR Green Sport FieldPlumbing & restrooms | Escondido Union School District | Subcontractor | $5,000 |
| Nov 10, 2025 | CoH Energy Efficiency UpgradesSewer & wastewater | City of Holtville | Subcontractor | $2,099,000 |
| Nov 6, 2025 | 4160V Stadium Q&V HMH503 & Library NElectrical, low voltage & AV | California State University, Los Angeles | Subcontractor | $509,754 |
| Nov 4, 2025 | El Camino Real WideningOther | city of carlsbad or carlsbad municipal water district | Subcontractor | $2,287,856 |
| Sep 15, 2025 | Solar Installation for BreaRoofing | Americold Logistics | Subcontractor | $3,200,000 |
| Sep 9, 2025 | Mills WTP Fiber ConduitsBuildings & facilities | The Metropolitan Water District of Southern California | Subcontractor | $7,988,000 |
| Aug 26, 2025 | Foster Road Solar ArrayPaving & streets | County of Santa Barbara Capital Projects | Subcontractor | $4,255,388 |
| Aug 26, 2025 | SB CO North Branch Jail Solar ArraySolar, EV & energy | County of Santa Barbara Capital Projects | Subcontractor | $5,027,920 |
| Aug 25, 2025 | FY2027 Vacuum Excavation-HorizonDemolition & site work | Vista Irrigation District | Prime | $100,000 |
| Aug 13, 2025 | HVAC/Solar ProjectHVAC & mechanical | Brawley Union High School District | Subcontractor | $1,599,000 |
| Aug 11, 2025 | 08-Riv-74-27.5/34.3Paving & streets | California Department of Transportation (Caltrans) | Subcontractor | $17,882,900 |
| Jul 15, 2025 | Chaffey High School New Gymnasium Bldg BBuildings & facilities | Chaffey Joint Union High School District | Subcontractor | $21,295,704 |
| Jun 24, 2025 | Newhall Gateway BeautificationOther | City of Santa Clarita | Subcontractor | $2,602,816 |
| May 19, 2025 | Pacific Village Phase II DAAS, DBH, &CDHBuildings & facilities | County of San Bernardino - Project Management Division | Subcontractor | $47,205,837 |
| May 8, 2025 | Solar BatterySolar, EV & energy | Fallbrook Union High School District | Subcontractor | $3,981,932 |
| Mar 4, 2025 | DISTRICT WIDE ENERGY EFFICIENCY, RENEWABBuildings & facilities | San Bernardino City USD | Subcontractor | $52,995,697 |
| Dec 23, 2024 | PV Solar System &EV chargerSolar, EV & energy | Westmorland Union Elementary School District | Subcontractor | $1,464,730 |
| Dec 19, 2024 | Energy Conservation MeasuresSolar, EV & energy | San Marcos Unified School District | Subcontractor | $12,866,100 |
| Dec 11, 2024 | Solar ProjectSolar, EV & energy | Imperial Unified SD | Subcontractor | $9,458,205 |
| Nov 12, 2024 | Solar Energy Project AHSSolar, EV & energy | Arcadia Unified School District | Subcontractor | $3,345,814 |
| Oct 29, 2024 | Rincon DDMWD HGWRF Energy ProjectDesign, inspection & consulting | Rincon del Diablo Municipal Water District | Subcontractor | $3,546,073 |
| Oct 10, 2024 | Energy ConservationHVAC & mechanical | Lucerne Valley Unified School District | Subcontractor | $2,672,565 |
| Sep 1, 2024 | Yorba Linda Solar Canopy ProjectSolar, EV & energy | City of Yorba Linda | Subcontractor | — |
Most recent 25 of 55. Contract amounts are the whole project's, as the awarding body reported them to DIR (reported since July 2024); a role is "Prime" when the awarding body registered the contractor on the project.
Awarding bodies it works for most
- County of Los Angeles Internal Service Department · 8 projects
- University of California, Los Angeles · 2 projects
- City of Palm Desert · 2 projects
- County of Santa Barbara Capital Projects · 2 projects
- Riverside Community College District · 2 projects
- Calexico Unified School District · 1 project
- San Marcos Unified School District · 1 project
- Long Beach Unified School District · 1 project
- Department of General Services · 1 project
- Brawley Union High School District · 1 project
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